Shadow Copy System Writer Functionality

Updated: November 30, 2007

Applies To: Windows Server 2008

Shadow Copy automatically creates shadow copies of files and folders to restore a previous version of the file. The Shadow Copy System Writer is used by the cryptographic services provided by the operating system to enumerate and replace system files when the signature of a system file is different from the signature stored in the security catalog database.


Event ID Source Message



The Cryptographic Services service failed to initialize the VSS backup "System Writer" object.%1.



Cryptographic Services failed while processing the OnIdentity() call in the System Writer Object.%1.

CryptoAPI 2.0

Core Security